Posts: 34
Joined: Mon Apr 06, 2026
Salutations everyone. In 2011, the X5 had 40d. Rebuilt an engine. Reassembled it and got it going the first time, but the brake pedal was extremely stiff. So we proceeded as usual and arrived at the following. Two completely new brake servos. Bled the new master cylinder bench. The pistons for the calliper are new. Fresh hoses for callipers. Using a computer to bleed out abdominal muscles. I mounted a separate auxiliary vacuum pump directly to the servo to make sure, but there was no change. The vacuum measurement from the oil pump was 27. As soon as you press down on both pedals, the brakes will engage. After hearing "servo" or "vacuum," I decided to buy two new ones just in case the first one wasn't working.direct vacuum auxiliary vacuum pump. Got any suggestions? The abdominal pump is functioning properly during bleeding, so I'm sending it in for testing to rule out any other internal problems.
Posts: 41
Joined: Mon Apr 06, 2026
I don't understand what you have done, but it seems to be related to sound and vacuums.
Is it still possible to accomplish the two pedal pushes when the engine is off?
In my opinion, the ab pump is not going to be it.
Is it still possible to accomplish the two pedal pushes when the engine is off?
In my opinion, the ab pump is not going to be it.
Posts: 34
Joined: Mon Apr 06, 2026
The pump was sent for testing to the engine control unit. Take a look.
Posts: 41
Joined: Mon Apr 06, 2026
I assume the pump is fine if you bled it using a computer, as you mentioned.
Can you still receive the two pushes if you turn off the engine?
Not that you should attempt it without a pump right now.
Can you still receive the two pushes if you turn off the engine?
Not that you should attempt it without a pump right now.
Posts: 41
Joined: Mon Apr 06, 2026